The original symptoms were: when engine reached operating temp it had no power and a drop in vacuumat idle. Engine will not exceed 2K rpm.
I had the intake manifold off replacing all the seals. Thought I would test several electrical items before putting it all back together. I don’t know if this potentiometer problem would cause the original symptom or not. Thought I would replace it, but cannot find a replacement part and am to too sure that it is causing any problem. It doesn’t pass the test as I understand it.